linux-toradex.git/scripts/Makefile.build, branch tegra-10.11.4

kbuild: allow assignment to {A,C}FLAGS_KERNEL on the command line

2010-08-03T12:09:45+00:00

It is now possible to assign options to AS and CC
on the command line - which is only used for built-in code.

{A,C}FLAGS_KERNEL was used both in the top-level Makefile
in the arch makefiles, thus users had no way to specify
additional options to AS, CC without overriding
the original value.

Introduce a new set of variables KBUILD_{A,C}FLAGS_KERNEL
that is used by arch specific files and free up
{A,C}FLAGS_KERNEL so they can be assigned on
the command line.

All arch Makefiles that used the old variables has been updated.

Signed-off-by: Sam Ravnborg 
Cc: Tony Luck 
Cc: Hirokazu Takata 
Signed-off-by: Michal Marek

kbuild: allow assignment to {A,C,LD}FLAGS_MODULE on the command line

2010-08-03T12:09:45+00:00

It is now possible to assign options to AS, CC and LD
on the command line - which is only used when building modules.

{A,C,LD}FLAGS_MODULE was all used both in the top-level Makefile
in the arch makefiles, thus users had no way to specify
additional options to AS, CC, LD when building modules
without overriding the original value.

Introduce a new set of variables KBUILD_{A,C,LD}FLAGS_MODULE
that is used by arch specific files and free up
{A,C,LD}FLAGS_MODULE so they can be assigned on
the command line.

All arch Makefiles that used the old variables has been updated.

Note: Previously we had a MODFLAGS variable for both
AS and CC. But in favour of consistency this was dropped.
So in some cases arch Makefile has one assignmnet replaced by
two assignmnets.

Note2: MODFLAGS was not documented and is dropped
without any notice. I do not expect much/any breakage
from this.

Signed-off-by: Sam Ravnborg 
Cc: Denys Vlasenko 
Cc: Haavard Skinnemoen 
Cc: Mike Frysinger 
Cc: Tony Luck 
Cc: Geert Uytterhoeven 
Cc: Ralf Baechle 
Cc: Benjamin Herrenschmidt 
Cc: Martin Schwidefsky 
Cc: Chen Liqin 
Acked-by: Mike Frysinger  [blackfin]
Acked-by: Haavard Skinnemoen  [avr32]
Signed-off-by: Michal Marek

Makefile.build: make KBUILD_SYMTYPES work again

2010-06-04T10:46:48+00:00

commit 37a8d9f67f18de1e2cbc7387311ce22d4dbff518 tried to combine some
duplicate code and accidentally broke how KBUILD_SYMTYPES worked

This fixes the code to match the original intention by the author who
originally added the code I believe.

The fixes include:
- removing extra whitespaces in the if-statements
- moving the if-statement from around the -r to the -T
- adding a second arg to cmd_gensymtypes to simplify the options passed
  to genksyms.

Tested by instrumenting genksyms and seeing what options were passed in
during a make, KBUILD_SYMTYPES make, and when a foo.symref was created.

Everything compiled and looked ok.

Signed-off-by: Don Zickus 
Signed-off-by: Michal Marek

kbuild: Fix linking error built-in.o no such file or directory

2010-02-02T13:33:54+00:00

This patch fixes the link error "built-in.o: no such file or directory".
The problem happens if "dirx/Makefile" contains only "obj-m += diry/
dirz/" and the empty "dirx/built-in.o" is missing. Adding $(subdir-m)
into check for builtin-target fixes this error.

Signed-off-by: Jiafu He 
Signed-off-by: Michal Marek

MIPS: Tracing: Add an endian argument to scripts/recordmcount.pl

2009-12-17T01:57:22+00:00

MIPS and some other architectures need this argument to handle
big/little endian respectively.

Signed-off-by: Wu Zhangjin 
Cc: Nicholas Mc Guire 
Cc: zhangfx@lemote.com
Cc: Wu Zhangjin 
Cc: Ingo Molnar 
Cc: Thomas Gleixner 
Cc: Frederic Weisbecker 
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/674/
Acked-by: Steven Rostedt 
Signed-off-by: Ralf Baechle

kbuild: Don't define ALIGN and ENTRY when preprocessing linker scripts.

2009-09-21T04:27:08+00:00

Adding a reference to  to x86's  causes
the x86 linker script to have syntax errors, because the ALIGN and
ENTRY keywords get redefined to the assembly implementations of those.
One could fix this by adjusting the include structure, but I think any
solution based on that approach would be fragile.

Currently, it is impossible when writing a header to do something
different for assembly files and linker scripts, even though there are
clearly cases where one wants them to define macros differently for
the two (ENTRY being an excellent example).
So I think the right solution here is to introduce a new preprocessor
definition, called LINKER_SCRIPT that is set along with __ASSEMBLY__
for linker scripts, and to use that to not define ALIGN and ENTRY in
linker scripts.
I suspect we'll find other uses for this mechanism in
the future.

Signed-off-by: Tim Abbott 
Signed-off-by: Sam Ravnborg

arm, cris, mips, sparc, powerpc, um, xtensa: fix build with bash 4.0

2009-09-20T10:28:22+00:00

Albin Tonnerre  reported:

    Bash 4 filters out variables which contain a dot in them.
    This happends to be the case of CPPFLAGS_vmlinux.lds.
    This is rather unfortunate, as it now causes
    build failures when using SHELL=/bin/bash to compile,
    or when bash happens to be used by make (eg when it's /bin/sh)

Remove the common definition of CPPFLAGS_vmlinux.lds by
pushing relevant stuff to either Makefile.build or the
arch specific kernel/Makefile where we build the linker script.

This is also nice cleanup as we move the information out where
it is used.

Notes for the different architectures touched:

arm - we use an already exported symbol
cris - we use a config symbol aleady available
       [Not build tested]
mips - the jiffies complexity has moved to vmlinux.lds.S where we need it.
       Added a few variables to CPPFLAGS - they are only used by
       the linker script.
       [Not build tested]
powerpc - removed assignment that is not needed
          [not build tested]
sparc - simplified it using $(BITS)
um - introduced a few new exported variables to deal with this
xtensa - added options to CPP invocation
         [not build tested]

Cc: Albin Tonnerre 
Cc: Russell King 
Cc: Mikael Starvik 
Cc: Jesper Nilsson 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: "David S. Miller" 
Cc: Jeff Dike 
Cc: Chris Zankel 
Signed-off-by: Sam Ravnborg

kbuild: fail build if recordmcount.pl fails

2009-09-20T10:27:44+00:00

When this script fails the build should fail too. Otherwise there
are mysterious build failures later.

Signed-off-by: Andi Kleen 
Signed-off-by: Andrew Morton 
Signed-off-by: Sam Ravnborg

kbuild: echo the record_mcount command

2009-09-20T10:27:44+00:00

I had some problems with record_mcount in the Makefile and it was hard
to track down. Echo it by default to make it easier to diagnose.

Signed-off-by: Andi Kleen 
Signed-off-by: Andrew Morton 
Signed-off-by: Sam Ravnborg

kbuild: introduce subdir-ccflags-y

2009-04-19T09:12:12+00:00

Following patch introduce support for setting options
to gcc that has effect for current directory and all
subdirectories.

The typical use case are an architecture or a subsystem that
decide to cover all files with -Werror.
Today alpha, mips and sparc uses -Werror in almost all their
Makefile- with subdir-ccflag-y it is now simpler to do so
as only the top-level directories needs to be covered.

Likewise if we decide to cover a full subsystem such
as net/ with -Werror this is done by adding a single
line to net/Makefile.

Signed-off-by: Sam Ravnborg 
Cc: Ingo Molnar 
Cc: "H. Peter Anvin" 
Cc: Thomas Gleixner